Planet MGSW-2402, Руководство пользователя

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You can add, edit and remove port members of each trunk and then press " Apply " button after
you have finished configuring the trunks you need.
( Note: Make sure trunking ports are in the same VLAN group. )
3.9 STP (Spanning Tree Protocol)
Spanning tree is a link management protocol that provides path redundancy while preventing
undesirable loops in the network. For Layer 2 Ethernet network to function properly, only one
active path must exist between two stations.
The spanning-tree algorithm calculates the best loop-free path throughout a switched network.
STP forces redundant data paths into a standby (blocked) state. If a network segment in the
spanning tree fails and a redundant path exists, the spanning-tree algorithm recalculates the
spanning tree topology and activates the standby path.
Figure 3-8 The STP pag e
If you want to participate in spanning tree, have the " Enable Spanning Tree Protocol "
checkbox selected.
The Current Spanning Tree Root describes the unique root switch information for the instance
of spanning tree.
MAC Address: the MAC address of the root switch
Root Max Age: the amount of time (in seconds) protocol information received on a port is
stored by the root switch
Root Hello Time: how often the root switch broadcasts Hello message to other switches
Root Forward Delay: the amount of time a port will remain in the listening and learning states
before entering the forwarding state
Root Path Cost: the path cost to the root switch from this switch
Root Port: the port providing the best path from the switch to the root switch
The Spanning Tree Bridge Configuration describes this switch information in the spanning
tree.